PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-0265Heat Sink Assy

Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc · NSN 5865-00-054-4671 · FSC 5865 · No Item Name Available
Verified by PartsTable
NSN 5865-00-054-4671 — this item is cataloged by the U.S. Government under National Stock Number 5865-00-054-4671. Primary manufacturer part number: 40-0265.
Features
  • Heat Sink Assy — FSC 5865
  • 3 verified cross-references
  • Primary manufacturer: Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heat Sink Assy, cataloged under National Stock Number 5865-00-054-4671, is classified within Federal Supply Class 5865 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHeat Sink Assy
FSC / FSG5865 — No Item Name Available (FSG 58)
ManufacturersKilgore Flares Company Llc (CAGE 75324); Alliant Defense Electronics Systems Inc Dba Lundy Technical Center (CAGE 93712); Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (CAGE 48ZY0)
Technical Specifications
ParameterValue
NSN5865-00-054-4671
Primary Part Number40-0265
Item NameHeat Sink Assy
FSC / FSG5865 / 58 — No Item Name Available
ManufacturerMas Components & Coatings, Llc Dba Mas Components & Coatings Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6625-01-614-64143-8860-AC INTERCHANGEABLE
Meter,conductivity
Signet Scientific Co
Cross-Reference Index
Part NumberManufacturer
40-0265 Kilgore Flares Company Llc (USA)
40-0265 Alliant Defense Electronics Systems Inc Dba Lundy Technical Center (USA)
40-0265 PRIMARY Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc (USA)
Related Parts
6625-01-614-6414INTERCHANGEABLE
METER,CONDUCTIVITY
3-8860-AC

Frequently Asked Questions

What is NSN 5865-00-054-4671?

NSN 5865-00-054-4671 is a Heat Sink Assy, manufactured by Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc, classified under FSC 5865 (No Item Name Available). Status: active.

What are the part numbers for NSN 5865-00-054-4671?

NSN 5865-00-054-4671 has 3 cross-referenced part numbers: 40-0265 (Kilgore Flares Company Llc), 40-0265 (Alliant Defense Electronics Systems Inc Dba Lundy Technical Center), 40-0265 (Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc).

What NSN replaces 5865-00-054-4671?

There is 1 known substitute for 5865-00-054-4671: 6625-01-614-6414. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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